NAME
ipcrm — remove a message queue, semaphore set, or shared memory identifier
DESCRIPTION
The
ipcrm
command removes one or more specified message queue,
semaphore set, or shared memory identifiers.
Options
The identifiers are specified by the following
options:
- -m shmid
Remove the shared memory identifier
shmid
from the system.
The shared memory segment and data structure
associated with it are destroyed after the last detach.
- -q msqid
Remove the message queue identifier
msqid
from the system and destroy the message queue
and data structure associated with it.
- -s semid
Remove the semaphore identifier
semid
from the system and destroy the set of semaphores and
data structure associated with it.
- -M shmkey
Remove the shared memory identifier, created with key
shmkey,
from the system.
The shared memory segment and data structure associated with it
are destroyed after the last detach.
- -Q msgkey
Remove the message queue identifier, created with key
msgkey,
from the system and destroy the message queue
and data structure associated with it.
- -S semkey
Remove the semaphore identifier, created with key
semkey,
from the system and destroy the set of semaphores
and data structure associated with it.
The details of the removals are described in
msgctl(2),
shmctl(2),
and
semctl(2).
The identifiers and keys can be found by using
ipcs
(see
ipcs(1)).
STANDARDS CONFORMANCE
ipcrm: SVID2, SVID3
